z80230 ZiLOG Semiconductor, z80230 Datasheet - Page 12

• Manufacturer Part Number: z80230
• Description: Esc Enhanced Serial Communication Controller
• Manufacturer: ZiLOG Semiconductor

AC CHARACTERISTICS
Z80230 System Timing Table
No
1
2
3
4b
5
6
7
8b
9
10b TdEXT(INT), Z80230
Notes:
* Units equal to TcPc.
[1] Open drain-output, measured with open-drain test load.
[2] /RxC is /RTxC or /TRxC, whichever is supplying the receive clock.
[3] /TxC is /TRxC or /RTxC, whichever is supplying the transmit clock.
[4] Units equal to /AS.
12
Symbol
TdRXC(REQ)
TdRXC(W)
TdRdXC(SY)
TdRXC(INT), Z80230
TdTXC(REQ)
TdTXC(W)
TdTXC(DRQ)
TdTXC(INT), Z80230
TdSY(INT)
Parameter
/RxC High to W/REQ Valid
/RxC High to Wait Inactive
/RxC High to SYNC Valid
/RxC High to INT Valid
/TxC Low to W/REQ Valid
/TxC Low to Wait Inactive
/Txc Low to DTR/REQ Valid
/TxC Low to /INT Valid
SYNC to INT Valid
Min
+2
+2
13
13
13
11
4
2
8
9
7
2
2
10 MHz
Max
12
+3
+3
17
19
17
14
14
7
3
9
6
3
Min
+2
+2
+2
13
13
13
11
4
9
7
2
3
8
16 MHz
Max
+3
+3
+3
17
19
17
14
14
12
7
9
6
8
Notes*
[2]
[1,2]
[2]
[1,2]
[4]
[3]
[1,3]
[3]
[1,3]
[4]
[1]
[4]
[1,4]